fixed PR based on feedback

demos/samples_java/weather_forcecast_service/README.md

@@ -0,0 +1,36 @@
+# Weather Forecast Service Demo (Java)
+
+This demo shows how to run the Weather Forecast Service using Arch Gateway and Docker Compose.
+
+## Prerequisites
+- Docker & Docker Compose
+- `archgw` CLI installed and available in your PATH
+- Set your OpenAI API key in your environment: `export OPENAI_API_KEY=your-key-here`
+
+## Usage
+
+### Start the Demo
+
+```bash
+./run_demo.sh
+```
+
+This will:
+1. Check for a `.env` file. If not present, it will create one with your `OPENAI_API_KEY`.
+2. Start Arch Gateway using `arch_config.yaml`.
+3. Start the Network Agent and related services using Docker Compose.
+
+### Stop the Demo
+
+```bash
+./run_demo.sh down
+```
+
+This will:
+1. Stop Docker Compose services.
+2. Stop Arch Gateway.
+
+## Notes
+- Make sure your `OPENAI_API_KEY` is set in your environment before running the demo.
+- The script will create a `.env` file if it does not exist.
+- All services are started/stopped using the provided shell script for convenience.